Check if an element is in the Collection in C#

To check if an element is in the Collection, the code is as follows −

Example

 Live Demo

using System;
using System.Collections.ObjectModel;
public class Demo {
   public static void Main(){
      Collection<int> col = new Collection<int>();
      col.Add(10);
      col.Add(20);
      col.Add(30);
      col.Add(40);
      col.Add(50);
      col.Add(60);
      col.Add(70);
      col.Add(80);
      Console.WriteLine("Elements in the Collection...");
      foreach(int val in col){
         Console.WriteLine(val);
      }
      Console.WriteLine("Does the collection has the element 70? = "+col.Contains(70));
   }
}

Output

This will produce the following output −

Elements in the Collection...
10
20
30
40
50
60
70
80
Does the collection has the element 70? = True

Example

Let us see another example −

 Live Demo

using System;
using System.Collections.ObjectModel;
public class Demo {
   public static void Main(){
      Collection<string> col = new Collection<string>();
      col.Add("John");
      col.Add("Gary");
      col.Add("Tom");
      col.Add("Brad");
      col.Add("Katie");
      col.Add("Andy");
      col.Add("Nathan");
      Console.WriteLine("Elements in the Collection...");
      foreach(string val in col){
         Console.WriteLine(val);
      }
      Console.WriteLine("Does the collection has the value Bradley? = "+col.Contains("Bradley"));
   }
}

Output

This will produce the following output −

Elements in the Collection...
John
Gary
Tom
Brad
Katie
Andy
Nathan
Does the collection has the value Bradley? = False